khoa-le

 \DB::enableQueryLog(); // Enable query log

// Your Eloquent query executed by using get()
        
dd(\DB::getQueryLog());

khoa-le

ffmpeg -i video.mov  -c:v libvpx-vp9 -crf 30 -b:v 0 -b:a 128k -c:a libopus video.webm
 
#Convert video from 4K to FullHD
```
ffmpeg -i 50周年-PRビデオ_Final.mov -vf scale=1920:1080 -c:a copy output1080vid.mp4`

```

khoa-le

 ffmpeg -i video.mp4 -vframes 1 -f image2 cover.jpg

khoa-le

{	"transactions":			       86430,
	"availability":			       99.97,
	"elapsed_time":			      299.43,
	"data_transferred":		     1568.13,
	"response_time":		        0.34,
	"transaction_rate":		      288.65,
	"throughput":			        5.24,
	"concurrency":			       97.42,
	"successful_transactions":	       86430,
	"failed_transactions":		          22,

khoa-le

{	"transactions":			       28599,
	"availability":			       99.59,
	"elapsed_time":			      299.60,
	"data_transferred":		      933.64,
	"response_time":		        1.01,
	"transaction_rate":		       95.46,
	"throughput":			        3.12,
	"concurrency":			       96.64,
	"successful_transactions":	       28599,
	"failed_transactions":		         119,

khoa-le

#Create 4G swap (128M*32)
sudo dd if=/dev/zero of=/swapfile bs=128M count=32
sudo chmod 600 /swapfile
sudo mkswap /swapfile
sudo swapon /swapfile


6.    Enable the swap file at boot time by editing the /etc/fstab file.

Open the file in the editor:

khoa-le

 sudo ss -lptn 'sport = :10026'

khoa-le

##Use SWR to call ajax in client site

import useSWR from 'swr'

const fetcher = url => fetch(url, {
    'Content-Type': 'application/json',
}).then(r => r.json());

function Profile() {

khoa-le

##Start Zookeeper bin/zookeeper-start.sh config/zookeeper.properties

##Start broker server bin/kafka-server-start.sh config/server.properties

##List all topic bin/kafka-topics.sh --zookeeper=127.0.0.1:2181 --list

##Create topic

khoa-le

#!/bin/bash
sudo yum update
sudo yum install ruby
sudo yum install wget
cd /home/ec2-user
wget https://aws-codedeploy-ap-southeast-1.s3.ap-southeast-1.amazonaws.com/latest/install
chmod +x ./install
sudo ./install auto